Sound Help, Please

I’m using loadMovie levels 0 to 140.
level 0-I have linkage set to “myMusic01”-it is linked ONLY at this level.
This>loadMovieNum(“tab.swf”, 140); loads into level 0.
“tab.swf” is a popup menu that holds a volume slider and stop and start buttons for the music. The variable:
onClipEvent (load) {
myMusic = new Sound();
myMusic.attachSound(“myMusic01”);
myMusic.setVolume(50);
myMusic.start(0,999);
}
is on the popup menu MC at level 140.
Is there a way/any AS that will allow me to stop the music at level 120 with the linkage ONLY ON in level0???
Many thanks for any suggestions.